CN209201057U - Broadband frequency agility signal source module - Google Patents
Broadband frequency agility signal source module Download PDFInfo
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- CN209201057U CN209201057U CN201822193760.5U CN201822193760U CN209201057U CN 209201057 U CN209201057 U CN 209201057U CN 201822193760 U CN201822193760 U CN 201822193760U CN 209201057 U CN209201057 U CN 209201057U
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Abstract
The utility model discloses a kind of broadband frequency agility signal source modules, comprising: digital baseband block, frequency synthesizer module and up-converter module；The digital baseband block is connected with frequency synthesizer module and is integrated into base band frequency synthesizer module；The base band frequency synthesizer module and up-converter module are mounted on PXI backboard, and are communicated by the PXI bus on PXI backboard.The broadband frequency agility signal source module of the utility model is small in size, light weight and cost is low, can be installed in the same PXI cabinet with other multiple module measuring instruments, easily build a set of multifunctional test system, space and cost is greatly saved.
Description
Technical field
The utility model belongs to field of communication technology, especially a kind of broadband frequency agility signal source module.
Background technique
Traditional agile frequency source signal, it is such as external in recent years to release the broadband frequency agility based on LXI or PXIE bus successively
Signal source, is bench device, but the relatively large weight weight of small product size, can not meet that field testing is portable and test macro is small
The demand of type, and it is expensive.Therefore, agile frequency source signal on the market largely belongs to business level product, is only suitable for reality
Room environmental use is tested, severe external field environment is not applied for, there is limitation on field of employment and environmental suitability.
Summary of the invention
The purpose of this utility model is that: have on field of employment and environmental suitability for traditional agile frequency source signal
Limited problem provides a kind of broadband frequency agility signal source module.
The technical solution adopted in the utility model is as follows:
A kind of broadband frequency agility signal source module, comprising: digital baseband block, frequency synthesizer module and up-converter module；It is described
Digital baseband block is connected with frequency synthesizer module and is integrated into base band frequency synthesizer module；The base band frequency synthesizer module and up-converter module
It is mounted on PXI backboard, and is communicated by the PXI bus on PXI backboard.
Preferably, system controller is provided on the PXI backboard；The system controller passes through the PXI on PXI backboard
Bus is communicated with base band frequency synthesizer module and up-converter module.
Preferably, the frequency synthesizer module, comprising: sequentially connected external signal input terminals, locking phase main circuit and locking phase point
Circuit；The locking phase parallel circuit, comprising: be connected to the first locking phase parallel circuit of digital baseband block, and be connected to up-conversion
The the second locking phase parallel circuit and third locking phase parallel circuit of module；The locking phase main circuit is additionally coupled to external signal output end.
Preferably, the locking phase main circuit, including the vibration of sequentially connected locking phase chip, low-frequency filter LF0, constant temperature crystal
Swing four distributor of device and signal；The locking phase chip connects external signal input terminals；Four distributor of signal connects the simultaneously
One locking phase parallel circuit, the second locking phase parallel circuit, third locking phase parallel circuit and external signal output end.
Preferably, the first locking phase parallel circuit, comprising: sequentially connected phase discriminator one, low-frequency filter LF1 and voltage-controlled
Oscillator VCO1；The voltage controlled oscillator VCO 1 is connected to the DDS chip of digital baseband block, while passing through a two-divider
Connect phase discriminator one；
The second locking phase parallel circuit, comprising: sequentially connected phase discriminator two, low-frequency filter LF2, voltage controlled oscillator
VCO2, filter and amplifier one；The amplifier one connects the main road frequency mixer of up-converter module；The voltage controlled oscillator
VCO2 also passes through a four-divider connection phase discriminator two；
The third locking phase parallel circuit, comprising: sequentially connected phase discriminator three, low-frequency filter LF3 and voltage controlled oscillator
VCO3；The voltage controlled oscillator VCO 3 is connected to the switching switch SPDT3 of up-converter module, while being connected by a four-divider
Connect phase discriminator three.
Preferably, the digital baseband block, including sequentially connected primary scene programmable gate array FPGA 1, DDS core
Piece and the first bandpass filter BPF10；The primary scene programmable gate array FPGA 1 is connected by the PXI bus on PXI backboard
It is connected to system controller, the DDS chip is connected to the first locking phase parallel circuit of frequency synthesizer module；First bandpass filter connects
It is connected to up-converter module.
Preferably, the up-converter module, comprising: secondary scene programmable gate array FPGA 2 and the radio frequency letter being connected
Number conditioning circuit；The secondary scene programmable gate array FPGA 2 is connected to system control by the PXI bus on PXI backboard
Device；The radiofrequency signal improves a road, comprising: signal input circuit, the first frequency conversion channel, the second frequency conversion channel and signal output
Circuit；The input terminal of first frequency conversion channel and the second frequency conversion channel is connected to signal input circuit, and output end is connected to letter
Number output circuit；Second locking phase parallel circuit of the signal input circuit simultaneous connection word baseband module and frequency synthesizer module；Institute
It states the first frequency conversion channel and the second frequency conversion channel is all connected with the third locking phase parallel circuit of frequency synthesizer module.
Preferably, the signal input circuit, including sequentially connected second bandpass filter BPF20, main road frequency mixer
With switching switch SP4T；The second bandpass filter BPF20 is connected to the first bandpass filter of digital baseband block
BPF10；The amplifier one of second locking phase parallel circuit of the main road frequency mixer connection frequency synthesizer module；The switching switch SP4T is same
When connect the first frequency conversion channel and the second frequency conversion channel.
Preferably, first frequency conversion channel, including sequentially connected switching switch SPDT1, amplification attenuator one, mixing
Device one and low-pass filter LPF0, and be connected to switching switch SP4T simultaneously and switch the first film filtering of switch SPDT1
Device BPF1 and the second film filter BPF2；Second frequency conversion channel, including sequentially connected switching switch SPDT1, amplification
Attenuator two, frequency mixer two and bandpass filter BPF0, and be connected to switching switch SP4T simultaneously and switch switch SPDT2's
Third film filter BPF3 and the 4th film filter BPF4；The frequency mixer one and frequency mixer two also pass through switching switch
SPDT3 is connected to the third locking phase parallel circuit of frequency synthesizer module.
Preferably, the signal output apparatus, including sequentially connected switching switch SPDT, amplifier two and variable attenuation
Device；The switching switch SPDT connects low-pass filter LPF0 and bandpass filter BPF0 simultaneously.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, the broadband frequency agility signal source module of the utility model is small in size, light weight and cost is low, can be with other a variety of moulds
Block measuring instrument is installed in the same PXI cabinet, easily builds a set of multifunctional test system, be greatly saved space and
Cost, is suitable for indoor research and production debugging and Flight Line Maintenance ensures test.Especially to the automatic calibration measurement of developing products,
It is greatly improved efficiency, reduces human cost.
2, the broadband frequency agility signal source module of the utility model is designed according to technical grade product, high reliablity, is had very
Good environmental suitability, half of the price less than traditional commerce measuring instrument, market value with higher.
3, the utility model broadband frequency agility signal source module integrated digital modulated signal generate, wide bandwidth signal conditioning and
The key technologies such as Low phase noise frequency synthesis realize the output of more modulation signal, can be used as the simulator of a variety of communication equipments.
4, the broadband frequency agility signal source module of the utility model is easy to operate, and is with good expansibility.User
According to testing requirement, injection digital baseband block can be loaded from edlin Wave data, generates the echo signal that user needs.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the broadband frequency agility signal source module application PXI cabinet scheme of installation of the utility model.
Fig. 2 is the broadband frequency agility signal source module structural schematic diagram of the utility model.
Fig. 3 is the broadband frequency agility signal source module functional block diagram of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model, i.e., the described embodiments are only a part of the embodiments of the utility model,
Instead of all the embodiments.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be with each
Different configurations is planted to arrange and design.Therefore, the detailed of the embodiments of the present invention provided in the accompanying drawings is retouched below
The range for being not intended to limit claimed invention is stated, but is merely representative of the selected embodiment of the utility model.
Based on the embodiments of the present invention, those skilled in the art are obtained all without making creative work
Other embodiments are fallen within the protection scope of the utility model.
A kind of broadband frequency agility signal source module, comprising: digital baseband block, frequency synthesizer module and up-converter module；It is described
Digital baseband block is connected with frequency synthesizer module and is integrated into base band frequency synthesizer module；The base band frequency synthesizer module and up-converter module
It is mounted on PXI backboard, and is communicated by the PXI bus on PXI backboard.
The feature of the utility model and performance are described in further detail with reference to embodiments.
Embodiment 1
A kind of broadband frequency agility signal source module provided in this embodiment, as shown in Figure 1, comprising: digital baseband block, frequency
Comprehensive module and up-converter module；The digital baseband block is connected with frequency synthesizer module and is integrated into base band frequency synthesizer module；It is described
Base band frequency synthesizer module and up-converter module are mounted on PXI backboard, and are communicated by the PXI bus on PXI backboard.Specifically
Using the standard PXI cabinet of 3U high, 160mm depth；The digital baseband block, which is connected and is integrated into frequency synthesizer module, occupies PXI
The integrated base band frequency synthesizer module of one slot space of cabinet；Up-converter module is integrated into two slot spaces for occupying PXI cabinet
Integrated module.General PXI Zero greeve controller is configured on PXI cabinet as system controller, as shown in Fig. 2, total by PXI
Line is communicated with base band frequency synthesizer module and up-converter module, thus to the running parameter of base band frequency synthesizer module and up-converter module
It is controlled.Specifically, digital baseband block is after receiving control instruction, the primary scene programmable gate array of digital baseband
FPGA1 completes the parsing to control instruction, forms running parameter；And each register of DDS chip is configured, it realizes various
The generation of modulated signal, while controlling the parameter setting of the register of each locking phase chip and locking in frequency synthesizer module phase lock circuitry
The local oscillator frequency point that up-converter module needs；Meanwhile system controller sends control instruction to up-converter module by PXI bus,
Secondary scene programmable gate array FPGA 2 in up-converter module parses control instruction, formation running parameter, in control
Each switch, attenuator in frequency conversion channel, realize radiofrequency signal conditioning.For the ease of using, also it is connected with by PXI cabinet aobvious
Show device, communicate display with system controller, is shown for human-computer interaction.
Below referring to broadband frequency agility signal source module functional block diagram as shown in Figure 3, to digital baseband block, frequency synthesizer mould
The concrete operating principle of block and up-converter module is illustrated:
(1) the frequency synthesizer module, comprising: sequentially connected external signal input terminals, locking phase main circuit and locking phase parallel circuit；
The locking phase parallel circuit, comprising: be connected to the first locking phase parallel circuit of digital baseband block, and be connected to up-converter module
Second locking phase parallel circuit and third locking phase parallel circuit；The locking phase main circuit is additionally coupled to external signal output end.Specifically,
The external signal input terminals are for receiving external 100M input signal, then by locking phase main circuit and locking phase point
Circuit provides corresponding clock signal and local oscillation signal for digital baseband block and up-converter module.
The locking phase main circuit, using locking phase chip ADF4002, low-frequency filter LF0, constant-temperature crystal oscillator and signal
Four distributors composition is divided into 4 roads letter by four distributor of signal by received external 100M input signal after signal processing
Number, the first locking phase parallel circuit, the second locking phase parallel circuit, third locking phase parallel circuit and external signal output end are inputted respectively.Wherein,
The first locking phase parallel circuit, comprising: sequentially connected phase discriminator one, low-frequency filter LF1 and voltage controlled oscillator VCO 1；It is described
Voltage controlled oscillator VCO 1 is connected to the DDS chip of digital baseband block, while connecting phase discriminator one by a two-divider；It is logical
It crosses the first locking phase parallel circuit and provides 3.5G clock signal for the DDS chip of digital baseband block.The second locking phase parallel circuit, packet
It includes: sequentially connected phase discriminator two, low-frequency filter LF2, voltage controlled oscillator VCO 2, filter and amplifier one；The amplification
The main road frequency mixer of the connection up-converter module of device one；The voltage controlled oscillator VCO 2 also connects phase discriminator by a four-divider
Two；The local oscillation signal of 5GHz~10GHz is provided by the signal input circuit that the second locking phase parallel circuit is up-converter module.Institute
State third locking phase parallel circuit, comprising: sequentially connected phase discriminator three, low-frequency filter LF3 and voltage controlled oscillator VCO 3；The pressure
Control oscillator VCO3 is connected to the switching switch SPDT3 of up-converter module, while connecting phase discriminator three by a four-divider.
It is respectively that the first frequency conversion channel provides the first local oscillation signal of 11.58GHz~20.4GHz by switching switch SPDT3, is second
The second local oscillation signal of frequency conversion channel offer 10GHz~19.9GHz.Wherein, voltage controlled oscillator VCO 1 uses CRO3500C-LF；
Voltage controlled oscillator VCO 2 uses HMC587LC4；Voltage controlled oscillator VCO 3 uses HMC733LC4B.How are phase discriminator one, phase discriminator two
Phase discriminator three is all made of HMC704.Frequency synthesizer module generates Low phase noise low spurious local oscillator letter using polycyclic locking phase and sampling phase-looked technology
Number, low local oscillator is provided for up-converter module, is mutually made an uproar down to -125dBc/Hz@10kHz, spurious reduction is better than -75dBc, i.e. module
Final radio frequency output signal is mutually made an uproar better than -120dBc/Hz@10kHz, and spurious reduction is better than -70dBc.
(2) digital baseband block, including sequentially connected primary scene programmable gate array FPGA 1, DDS chip
AD9914 and the first bandpass filter BPF10；The primary scene programmable gate array FPGA 1 is total by the PXI on PXI backboard
Line is connected to system controller, and the DDS chip is connected to the first locking phase parallel circuit of frequency synthesizer module；First bandpass filtering
Device is connected to the second bandpass filter BPF20 of up-converter module.Specifically, the DDS chip AD9914 by first by showing
Field programmable gate array FPGA1 generate FM, AM, PULSE, DS, the modulated signals such as ASK, MSK, FSK, PSK, QAM and GMSK into
It is input to up-converter module after row direct-type Digital Frequency Synthesize and carries out signal condition, is input to the modulated signal of up-converter module
Frequency range in 1180MHz-1400MHz.Local frequency agile, narrow frequency model are realized by pull-in frequency Direct synthesis technique
It encloses the frequency switching time (lower than 100MHz) and is no more than 10 μ s, money frequency range (being greater than 1000MHz) frequency switching time does not surpass
30 μ s are crossed, i.e. the final radio frequency of broadband frequency agility signal source module continuous frequency sweep output frequency switching time is no more than 10 μ s, frequency
Agile (irregular frequency hopping) output frequency switching time is no more than 30 μ s.It is traditional during alternative communication equipment research and production
Desk-top wideband signal source, frequency switching time is short, can be used for the special dimensions such as electronic countermeasure and frequency hopping communications.
(3) up-converter module, comprising: the secondary scene programmable gate array FPGA 2 and radiofrequency signal tune being connected
Manage circuit；The secondary scene programmable gate array FPGA 2 is connected to system controller by the PXI bus on PXI backboard；Institute
State radiofrequency signal conditioning road, comprising: signal input circuit, the first frequency conversion channel, the second frequency conversion channel and signal output apparatus；
The input terminal of first frequency conversion channel and the second frequency conversion channel is connected to signal input circuit, and output end is connected to signal output
Circuit；Second locking phase parallel circuit of the signal input circuit simultaneous connection word baseband module and frequency synthesizer module；Described first
Frequency conversion channel and the second frequency conversion channel are all connected with the third locking phase parallel circuit of frequency synthesizer module.Specifically,
Signal input circuit, including sequentially connected second bandpass filter BPF20, main road frequency mixer and switching switch
SP4T；The second bandpass filter BPF20 is connected to the first bandpass filter BPF10 of digital baseband block；The main road
Frequency mixer connects the amplifier one of the second locking phase parallel circuit of frequency synthesizer module；The switching switch SP4T connects the first frequency conversion simultaneously
Channel and the second frequency conversion channel.The main road frequency mixer is by the modulated signal of received 1180MHz-1400MHz and the second locking phase
The local oscillation signal for 5GHz~10GHz that parallel circuit provides is synthesized, and is then 4 road signals by switch SP4T points of switching,
In 2 tunnels be input to the first frequency conversion channel, 2 tunnels are input to the second frequency conversion channel.
First frequency conversion channel, including sequentially connected switching switch SPDT1, amplification attenuator one, one and of frequency mixer
Low-pass filter LPF0, and be connected to switching switch SP4T simultaneously and switch the first film filter BPF1 of switch SPDT1
With the second film filter BPF2；Second frequency conversion channel, including sequentially connected switching switch SPDT1, amplification attenuator
Two, frequency mixer two and bandpass filter BPF0, and simultaneously be connected to switching switch SP4T and switching switch SPDT2 third it is thin
Film filter BPF3 and the 4th film filter BPF4；The frequency mixer one and frequency mixer two are also connected by switching switch SPDT3
It is connected to the third locking phase parallel circuit of frequency synthesizer module.The radiofrequency signal that 2 tunnels are input to the first frequency conversion channel passes through the first film respectively
Filter BPF1 and the second film filter BPF2 filtering, then pass through after switching switch SPDT1 is synthesized by amplifying attenuator one
It is input to after frequency mixer one mixed, then the radio frequency that frequency range is 150KHz~9GHz is obtained by low-pass filter LPF0
Signal, and it is input to switching switch SPDT.The radiofrequency signal that 2 tunnels are input to the second frequency conversion channel passes through third film respectively and filters
Device BPF3 and the 4th film filter BPF4 filtering, then by being inputted after switching switch SPDT2 synthesis by amplification attenuator two
After being mixed to frequency mixer two, then by bandpass filter BPF0 obtain frequency range be 9G~18GHz radiofrequency signal, and
It is input to switching switch SPDT.
The signal output apparatus, including sequentially connected switching switch SPDT, amplifier two and variable attenuator
AV81516；The switching switch SPDT connects low-pass filter LPF0 and bandpass filter BPF0 simultaneously.
Up-converter module uses segment processing, linear compensation and temperature-compensating to radiofrequency signal.(1) segment processing,
Frequency segmentation is divided into two sections of frequency conversions of 150KHz~9GHz and 9GHz~18GHz and conditioning, frequency is realized by switching SPDT
Section alternating, finally by the signal of variable attenuator output 150KHz-18GHz frequency range.(2) linear compensation, according to the width in channel
Frequency response answers negative slope to compensate, and amplification attenuator is introduced in design, so that the net gain fluctuation of each frequency range of entire up-conversion passage
Within 4dB；(3) temperature-compensating is because gain characteristic of the hardware circuit under high/low temperature can change, in order to will be this
Variation is minimized done compensation, therefore temperature-compensation circuit is introduced in designing, the temperature characterisitic of temperature-compensation circuit and
The temperature characterisitic of radio-frequency channel (the first frequency conversion channel and the second frequency conversion channel) is on the contrary, gain under gain increase low temperature i.e. under high temperature
It reduces, just compensating for radio-frequency channel high temperature gain reduces the problem of low temperature gain is got higher, and radio frequency is made after temperature-compensating
Channel is less than 3dB in the change in gain of -40 DEG C~55 DEG C temperature ranges.
For broadband frequency agility signal source module as surveying instrument, output signal level ATT range dynamic is big, for-
120dBm~15dBm, close to the level of desk-top instrument, the small signal output of realization -120dBm in so small volume, to electricity
Road layout and production engineering specifications are quite high.The isolation of signal flow and each functional circuit is considered when module design especially heavy
It wants, while Larger Dynamic programmable attenuator design in broadband is also the most important thing, therefore each functional circuit is used in module independent
Spraying absorbing material in chamber and each shielding cavity is divided to avoid interfering with each other, broadband Larger Dynamic programmable attenuator uses broadband attenuation piece
It realizes, attenuation is less than 5dB up to 127dB, loss, to realize that broadband Larger Dynamic exports.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of broadband frequency agility signal source module characterized by comprising digital baseband block, frequency synthesizer module and up-conversion
Module；The digital baseband block is connected with frequency synthesizer module and is integrated into base band frequency synthesizer module；The base band frequency synthesizer module and
Up-converter module is mounted on PXI backboard, and is communicated by the PXI bus on PXI backboard.
2. frequency agility signal source module in broadband as described in claim 1, which is characterized in that be provided on the PXI backboard and be
System controller；The system controller is led to by the PXI bus on PXI backboard with base band frequency synthesizer module and up-converter module
Letter.
3. frequency agility signal source module in broadband as claimed in claim 2, which is characterized in that the frequency synthesizer module, comprising: successively
External signal input terminals, locking phase main circuit and the locking phase parallel circuit of connection；The locking phase parallel circuit, comprising: be connected to digital base
The first locking phase parallel circuit with module, and it is connected to the second locking phase parallel circuit and third locking phase parallel circuit of up-converter module；
The locking phase main circuit is additionally coupled to external signal output end.
4. frequency agility signal source module in broadband as claimed in claim 3, which is characterized in that the locking phase main circuit, including according to
Locking phase chip, four distributor of low-frequency filter LF0, constant-temperature crystal oscillator and signal of secondary connection；The locking phase chip connection
External signal input terminals；Four distributor of signal connects the first locking phase parallel circuit, the second locking phase parallel circuit, third locking phase simultaneously
Parallel circuit and external signal output end.
5. frequency agility signal source module in broadband as claimed in claim 4, which is characterized in that
The first locking phase parallel circuit, comprising: sequentially connected phase discriminator one, low-frequency filter LF1 and voltage controlled oscillator VCO 1；
The voltage controlled oscillator VCO 1 is connected to the DDS chip of digital baseband block, while connecting phase discriminator by a two-divider
One；
The second locking phase parallel circuit, comprising: sequentially connected phase discriminator two, low-frequency filter LF2, voltage controlled oscillator VCO 2,
Filter and amplifier one；The amplifier one connects the main road frequency mixer of up-converter module；The voltage controlled oscillator VCO 2 is also
Phase discriminator two is connected by a four-divider；
The third locking phase parallel circuit, comprising: sequentially connected phase discriminator three, low-frequency filter LF3 and voltage controlled oscillator VCO 3；
The voltage controlled oscillator VCO 3 is connected to the switching switch SPDT3 of up-converter module, while passing through a four-divider connection mirror
Phase device three.
6. frequency agility signal source module in broadband as claimed in claim 3, which is characterized in that the digital baseband block, including
Sequentially connected primary scene programmable gate array FPGA 1, DDS chip and the first bandpass filter BPF10；The primary scene
Programmable gate array FPGA 1 is connected to system controller by the PXI bus on PXI backboard, and the DDS chip is connected to frequency synthesizer
First locking phase parallel circuit of module；First bandpass filter is connected to up-converter module.
7. frequency agility signal source module in broadband as claimed in claim 3, which is characterized in that the up-converter module, comprising: phase
The secondary scene programmable gate array FPGA 2 and radiofrequency signal conditioning circuit of connection；The secondary scene programmable gate array
FPGA2 is connected to system controller by the PXI bus on PXI backboard；The radiofrequency signal improves a road, comprising: signal is defeated
Enter circuit, the first frequency conversion channel, the second frequency conversion channel and signal output apparatus；First frequency conversion channel and the second frequency conversion channel
Input terminal be connected to signal input circuit, output end is connected to signal output apparatus；The signal input circuit connects simultaneously
Second locking phase parallel circuit of digital baseband block and frequency synthesizer module；First frequency conversion channel and the second frequency conversion channel are all connected with frequency
The third locking phase parallel circuit of comprehensive module.
8. frequency agility signal source module in broadband as claimed in claim 7, which is characterized in that the signal input circuit, including
Sequentially connected second bandpass filter BPF20, main road frequency mixer and switching switch SP4T；Second bandpass filter
BPF20 is connected to the first bandpass filter BPF10 of digital baseband block；The second of the main road frequency mixer connection frequency synthesizer module
The amplifier one of locking phase parallel circuit；The switching switch SP4T connects the first frequency conversion channel and the second frequency conversion channel simultaneously.
9. frequency agility signal source module in broadband as claimed in claim 7, which is characterized in that first frequency conversion channel, including
Sequentially connected switching switch SPDT1, amplification attenuator one, frequency mixer one and low-pass filter LPF0, and be connected to simultaneously
Switch switch SP4T and switches the first film filter BPF1 and the second film filter BPF2 of switch SPDT1；Described second
Frequency conversion channel, including sequentially connected switching switch SPDT1, amplification attenuator two, frequency mixer two and bandpass filter BPF0, with
And it is connected to switching switch SP4T simultaneously and switches the third film filter BPF3 and the 4th film filter of switch SPDT2
BPF4；The third locking phase parallel circuit that the frequency mixer one and frequency mixer two are also connected to frequency synthesizer module by switching switch SPDT3.
10. frequency agility signal source module in broadband as claimed in claim 7, which is characterized in that the signal output apparatus, including
Sequentially connected switching switch SPDT, amplifier two and variable attenuator；The switching switch SPDT connects low-pass filtering simultaneously
Device LPF0 and bandpass filter BPF0.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822193760.5U CN209201057U (en) | 2018-12-25 | 2018-12-25 | Broadband frequency agility signal source module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822193760.5U CN209201057U (en) | 2018-12-25 | 2018-12-25 | Broadband frequency agility signal source module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808758A (en) * | 2019-11-12 | 2020-02-18 | 中电科仪器仪表有限公司 | Miniaturized PXI bus frequency spreading device and frequency spreading method |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808758A (en) * | 2019-11-12 | 2020-02-18 | 中电科仪器仪表有限公司 | Miniaturized PXI bus frequency spreading device and frequency spreading method |
| CN110808758B (en) * | 2019-11-12 | 2021-10-26 | 中电科思仪科技股份有限公司 | Miniaturized PXI bus frequency spreading device and frequency spreading method |
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